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www.fueleconomy.gov
Photograph of Cars
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 Why is Fuel
Economy
Important?
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2005 Compressed Natural Gas Vehicles
Model
MPG
(city)
MPG
(hwy)
Annual
Fuel
Cost*

Greenhouse Gas
Emissions
(tons/yr)*
 Greenhouse gas (GHG) emissions from your car may contribute to climate change. Cars with better gas mileage emit less greenhouse gases. Click for more info.
EPA
Air
Pollution
Score
From 0 to 10 (best)
 The EPA air pollution score rates cars and light trucks based on how much smog-forming air pollution they emit. Some vehicles are available in multiple emission versions. Click for more info.
Chevrolet Silverado 2500 HD 2WD CNG
8 cyl, 6 L, Automatic 4-spd, CNG 		8 11
$4250
16.60 score: 02
score: 03
Chevrolet Silverado 2500 HD 4WD CNG
8 cyl, 6 L, Automatic 4-spd, CNG 		8 11
$4250
16.60 score: 02
score: 03
GMC Sierra 2500 HD 2WD CNG
8 cyl, 6 L, Automatic 4-spd, CNG 		8 11
$4250
16.60 score: 02
score: 03
GMC Sierra 2500 HD 4WD CNG
8 cyl, 6 L, Automatic 4-spd, CNG 		8 11
$4250
16.60 score: 02
score: 03
Honda Civic CNG
4 cyl, 1.7 L, Automatic (variable gear ratios), CNG 		26 31
$1366
5.40 score: 95
score: 09

Annual Fuel Costs and Greenhouse Gas Estimates are based on 45% highway driving, 55% city driving, and 15000 annual miles.

Assumed Fuel Prices:

  • Regular: 2.66
  • Premium: 2.93
  • Diesel: 3.29
  • CNG: 1.65
  • Electricity: 0.08 per kilowatt hour
  • E85: 3.27
  • LPG: 2.10